his life shows what is possible when one acts on convictions president obama said nelson mandela now belongs to the ages. he was 95 years old and had been in failing health sometime. >> coming up next cal athletics signs up a ben >> updating breaking story out of contra costa county. officials warning about a possible color yeens incident >> nick smith is live where the county has given the all clear. >> reporter: you know we have new information this, is what you need to know. i just got off the phone with randall sawer. he says all clear has been given. the tank has been empty, and you can, they're continuing to monitor the situation and they're doing now what is called a cause analysis thchl is a view from sky seven hd. we're over the scene moments after the announcement was given there was a shelter in place. this is what we know. the plan had been shut down since tuesday after chlorine releases today's leak was unrelated to those chlorine releases, pipes had contained water broke and contaminated the chlorine tanks. so, a shelter in place was given. what happens is that chlorine